HB08 {RItools} | R Documentation |
Adjusted & combined differences as in Hansen & Bowers (2008)
Description
Adjusted & combined differences as in Hansen & Bowers (2008)
Usage
HB08(alignedcovs)
Arguments
alignedcovs |
A CovsAlignedToADesign object |
Value
list with components:
- z
First item
- p
Second item
- Msq
Squared Mahalanobis distance of combined differences from origin
- DF
degrees of freedom
- adj.diff.of.totals
Vector of sum statistics z't - E(Z't), where t represents cluster totals of the product of the covariate with unit weights. Hansen & Bowers (2008) refer to this as the adjusted difference vector, or d(z,x).
- tcov
Matrix of null covariances of Z'x-tilde vector, as above.
References
Hansen, B.B. and Bowers, J. (2008), “Covariate Balance in Simple, Stratified and Clustered Comparative Studies,” Statistical Science 23.
See Also
balanceTest
, alignDesignsByStrata
[Package RItools version 0.3-4 Index]